It's a wired network. I have a pc in the living room,a pc in my room along with my 360.
I did try to run directly from the modem and still have issues.
Right now I am running off the network through the modem and everything is smooth again. I called Charter (my ISP) and they had me renew my modems IP through the cmd.
but why does this happen? Bad modem? They are telling me its my router and that I should buy their $50 router that "works". I'm not falling for that.
thank you all very much for the reply.